Ext.onReady(function(){
	layout = new Ext.Panel({
		renderTo: document.body,
		title: 'Layout',
		layout: 'hbox',
		items: [{
			title: 'Center Region',
			region: 'center',     // center region is required, no width/height specified
			id: 'center-container',
			xtype: 'container',
			layout: 'hbox'
		}]
	});
});